Anglo-Norman theory:
Pople: This unusual and interesting name is of Old French (Anglo-Norman) origin, and is commonly believed to be a topographical surname for someone who lived by a strand of poplar trees or a single conspicuous poplar tree. However, I believe it derives from Uphill, a place so called in Somerset near Weston-Super-Mare; the place name is recorded as "Opopille" in the Doomsday Book in 1086. Uphill stands on the lower (River) Axe. POPLE is so common a name in North Somerset that in only one of the county’s several registration districts – that of Axbridge – some 185 Poples are listed on the 1891 census.
- Pople (Anglo-Norman: Old French phonetic spelling) from Opopille, the Norman pronunciation of Uphill, early local spellings included Popil, Pophull, Popehull. Pople/Uphill: N. Som. Opopille (AN) 1086 (DB). '(Place) above the creek'. OE uppan + pyll. River Axe. The Populus family were a Noble family (Knights and Lords) in Gascony (Gascogne), France. [Populus, Biarittz, France]. Pople. Robert Populus of Normandy [Pople, Pepall, People] (AN).
"This name. sometimes written POPLE Popple in England. is of very ancient existence there, coming from Normandy about the time of the Conquest."-- "Genealogies of the State of New York: A Record of the Achievements of Her People in the Making of a Commonwealth and the Founding of a Nation", Volume 3
"Pople, or Populus. See People." "Pepall. See People. People. Robert Populus of Nor-mandy held lands at Anet and Saucey from Philip Augustus, Nor-mandy, c. 1200 (Mem. Soc. Ant. Norm. V. 180). "-- "Full text of "The Norman people and their existing descendants in the British dominions and the United States of America ..": https://archive.org/stream/normanpeopleand01unkngoog/normanpeoplean...
Y-DNA: J-YP13* (id: YF09093, ENG) Pople, mtDNA: J1c1b2a (WAL), GedMatch: T378203, ySearch: QRHHN